Is CVE-2026-48534 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-48534 being exploited in the wild.

How severe is CVE-2026-48534?

Medium severity, with a CVSS score of 5.4, published 23 July 2026.

Which products and versions are affected?

GFI Software Archiver before 15.13.

Is there a fix for CVE-2026-48534?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-48534 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-48534?

Check whether you run GFI Software Archiver at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-48534: GFI Archiver stored XSS in IMAP Server configuration

CVE-2026-48534 · Severity: medium · CVSS 5.4 · Published 2026-07-23

GFI Archiver, a solution used for archiving corporate emails and files, contains a security flaw in its IMAP server configuration settings. An authenticated attacker can inject malicious scripts into the configuration page, which will then execute in the browsers of other administrators or users who view that page. This could lead to unauthorized actions being performed on behalf of legitimate users or the theft of sensitive session information.

Technologies: GFI Software Archiver. Vendors: GFI Software.

Quick answers

Is CVE-2026-48534 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-48534 being exploited in the wild.
How severe is CVE-2026-48534?: Medium severity, with a CVSS score of 5.4, published 23 July 2026.
Which products and versions are affected?: GFI Software Archiver before 15.13.
Is there a fix for CVE-2026-48534?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-48534 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-48534?: Check whether you run GFI Software Archiver at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stored cross-site scripting (XSS) vulnerability exists in GFI Archiver versions prior to 15.13. The flaw is located in the /Archiver/ImapServerWizard.aspx component, specifically within the server URL parameter. The application's SaveAllConfigSettings() function fails to perform proper output encoding before storing the input. An authenticated attacker with access to the IMAP Server configuration can inject a malicious payload that executes in the context of any user who subsequently views the configuration page. This can be used to hijack sessions or perform unauthorized administrative actions. The issue is resolved in version 15.13.

Affected products

GFI Software Archiver before 15.13

Timeline

2026-07-23: disclosed
2026-07-23: advisory

References

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